Congenital heart defect corrective surgeries

Definition

Congenital heart defect corrective surgeries fix or treat heart defects that a child is born with. A baby born with heart defects has congenital heart disease. Surgery is needed if the defects are dangerous to the child’s health or well-being.

Before birth, the baby has a blood vessel that runs between the aorta (the main artery to the body) and the pulmonary artery (the main artery to the lungs), called the ductus arteriosus. This opening usually closes shortly after birth. A PDA occurs when this opening does not close after birth.

In most cases, the doctor will use medicine to close off the opening. If this does not work, then other techniques are used to close the opening.

Sometimes the PDA can be closed with a procedure that does not involve surgery. The procedure is usually done in a laboratory that uses x-rays. In this procedure, the surgeon inserts a wire into an artery in the leg and passes it up to the heart. There are no cuts, except for a tiny hole in the groin. Then, a small metal coil or another device is passed through the wire into the infant's arteriosus artery. The coil or other device blocks the blood flow, and this corrects the problem.

Another method is to make a small surgical cut on the left side of the chest. The surgeon finds the PDA and then ties off or clips the ductus arteriosus, or divides and cuts it. Tying off the ductus arteriosus is called ligation. This procedure may be done in the neonatal intensive care unit (NICU).

Coarctation of the aorta occurs when a part of the aorta has a very narrow section, like in an hourglass timer.

To repair this defect, a cut is usually made on the left side of the chest, between the ribs. There are many ways to repair coarctation of the aorta.

The most common way to repair it is to cut the narrow section and make it bigger with a patch made of Gore-tex, a man-made (synthetic) material.

Another way to repair this problem is to remove the narrow section of the aorta and stitch the remaining ends together. This can usually be done in older children.

A third way to repair this problem is called a subclavian flap. First, a cut is made in the narrow part of the aorta. Then, a patch is taken from the left subclavian artery (the artery to the arm) to enlarge the narrow section of the aorta.

A fourth way to repair the problem is to connect a tube to the normal sections of the aorta, on either side of the narrow section. Blood flows through the tube and bypasses the narrow section.

A newer method does not require surgery. A small wire is placed through an artery in the groin and up to the aorta. A small balloon is then opened up in the narrow area. A stent or small tube is left there to help keep the artery open. The procedure is done in a laboratory with x-rays. This procedure is often used when the coarctation occurs after it has already been fixed.

The atrial septum is the wall between the left and right atria (upper chambers) of the heart. There is a natural opening before birth that usually closes on its own when a baby is born. When the flap does not close, the child has an ASD.

Sometimes an ASD can be closed without open-heart surgery. First, the surgeon makes a tiny cut in the groin. Then the surgeon inserts a wire into a blood vessel that goes to the heart. Next, two small umbrella-shaped "clamshell" devices are placed on the right and left sides of the septum. These two devices are attached to each other. This closes the hole in the heart. Not all medical centers do this procedure.

Open-heart surgery may also be done to repair ASD. Using open-heart surgery, the septum can be closed using stitches. Another way to cover the hole is with a patch.

The ventricular septum is the wall between the left and right ventricles (lower chambers) of the heart. A hole in the ventricular septum is called a VSD.

By age 1, most small VSDs close on their own. However, those VSDs that do stay open after this age must be closed.

Larger VSDs, small ones in certain parts of the ventricular septum, or ones that cause heart failure or endocarditis (inflammation) need open-heart surgery. The hole in the septum is usually closed with a patch.

Some septal defects can be closed without surgery. The procedure involves passing a small wire into the heart and placing a patch over the defect. The surgeon is guided by x-rays.

Opening the pulmonary valve and removing the thickened muscle (stenosis).

Placing a patch on the right ventricle and main pulmonary artery to improve blood flow to the lungs.

The child may have a shunt procedure done first. A shunt moves blood from one area to another. This is done if the open-heart surgery needs to be delayed because the child is too sick to go through surgery.

During a shunt procedure, the surgeon makes a surgical cut in the left side of the chest.

Once the child is older, the shunt is closed and the main repair in the heart is performed.

In a normal heart, the aorta comes from the left side of the heart, and the pulmonary artery comes from the right side. In transposition of the great vessels, these arteries come from the opposite sides of the heart. The child may also have other birth defects.

Correcting transposition of the great vessels requires open-heart surgery. If possible, this surgery is done shortly after birth.

The most common repair is called an arterial switch. The aorta and pulmonary artery are divided. The pulmonary artery is connected to the right ventricle, where it belongs. Then, the aorta and coronary arteries are connected to the left ventricle, where they belong.

Truncus arteriosus is a rare condition that occurs when the aorta, coronary arteries, and pulmonary artery all come out of one common trunk. The disorder may be very simple, or very complex. In all cases, it requires open-heart surgery to repair the defect.

Repair is usually done in the first few days or weeks of the infant's life. The pulmonary arteries are separated from the aortic trunk, and any defects are patched. Usually, children also have a ventricular septal defect, and that is also closed. A connection is then placed between the right ventricle and the pulmonary arteries.

The tricuspid valve is found between the upper and lower chambers on the right side of the heart. Tricuspid atresia occurs when this valve is deformed, narrow, or missing.

Babies born with tricuspid atresia are blue because they cannot get blood to the lungs to pick up oxygen.

To get to the lungs, blood must cross an atrial septal defect (ASD), ventricular septal defect (VSD), or a patent ductus artery (PDA). (These conditions are described above.) This condition severely restricts blood flow to the lungs.

Soon after birth, the baby may be given a medicine called prostaglandin E. This medicine will help keep the patent ductus arteriosus open so that blood can continue to flow to the lungs. However, this will only work for a while. The child will eventually need surgery.

The child may need a series of shunts and surgeries to correct this defect. The goal of this surgery is to allow blood from the body to flow into the lungs. The surgeon may have to repair the tricuspid valve, replace the valve, or put in a shunt so that blood can get to the lungs.

TAPVR occurs when the pulmonary veins bring oxygen-rich blood from the lungs back to the right side of the heart, instead of the left side of the heart, where it usually goes in healthy people.

This condition must be corrected with surgery. When the surgery is done depends on how sick the baby is. The surgery may be done in the newborn period if the infant has severe symptoms. If it is not done right after birth, it is done in the first 6 months of the baby's life.

TAPVR repair requires open-heart surgery. The pulmonary veins are routed back to the left side of the heart, where they belong, and any abnormal connections are closed.

This is a very severe heart defect that is caused by a very poorly developed left heart. If it is not treated, it causes death in most babies who are born with it. Unlike babies with other heart defects, those with hypoplastic left heart do not have any other defects. Operations to treat this defect are done at specialized medical centers. Usually surgery corrects this defect.

A series of three heart operations is usually needed. The first operation is done in the first week of the baby's life. This is a complicated surgery where one blood vessel is created from the pulmonary artery and the aorta. This new vessel carries blood to the lungs and the rest of the body.

The second operation is usually done when the baby is 4 to 6 months old (Fontan operation).

The third operation is done a year after the second operation.

A heart transplant is another option for this condition. But finding a donor heart for an infant is very difficult. Infant heart transplants can be done at only a few medical centers.

References

Recommendations for preparing children and adolescents for invasive cardiac procedures: A statement from the American Heart Association Pediatric Nursing Subcommittee of the Council on Cardiovascular Nursing in collaboration with the Council on Cardiovascular Diseases of the Young. Circulation. 2003;108:2250-2564.